Subset (10)

eli5 · 25k rows

Split (1)

train · 25k rows

query stringlengths 20 300	positive listlengths 1 1	negative listlengths 1 1
Why do the blind learn braille? Wouldn't any raised text achieve the same effect, while being useful to both those who are and aren't blind?	[ "Take the letters: Q O C D G, or I J L T, or F E B R P Those groups are far too similar to each other for it to be convenient. In braille, they're all recognisably different." ]	[ "The point of barcodes is that they are very easy for a computer to read. Barcodes are just a way to write down a number. For example, let's say you want to write the number 27. You could convert that number to binary, which only has the numbers 0 and 1, so 27 becomes 11011. You can then turn that into a barcode by...
How small a hole could a laser drill?	[ "Lasers drill by thermally heating. Thus the size of hole is a thermal problem. The best way to make high aspect ratio holes is a self-limiting chemical/reactive ion process, like [DRIE](_URL_0_)." ]	[ "For astigmatism maybe. For focusing problems, I think you would need holographic output, which is extremely rare, and last I heard, crude." ]
Why is "dry humor" called "dry"?	[ "Lifted wholesale from a Google search: In this case, dry is not the opposite of wet, but it means bare, and lacking adornment, such as a dry report. Etymonline, the online etymology dictionary, indicates the word has been used to describe comedy for more than 500 years! dry O.E. dryge, from P.Gmc. *draugiz, from P...	[ "Simply put for the same reason drinking water when you're not thirsty isn't as refreshing as when you're REALLY thirsty. Anticipating the bodies' needs doesn't trigger the same reward responses in the brain as fulfilling a need that is already present. Your muscles don't NEED to stretch right now, so you can't ant...
how do different parts of the crystal know to stop growing at the right point to give it a "regular" shape?	[ "> how do different parts of the crystal know to stop growing at the right point to give it a \"regular\" shape? They don't, and if you need a crystal that ends in a single layer you should polish it very, very carefully. Atoms rarely start a new layer - the new atom is weakly bound and doesn't fit well to the over...	[ "Ken Jordan's group at Pitt does a ton with different ice forms. Here's a link to his group page: _URL_0_ The publications there go into a lot of detail, but here's a bit of a TL;DR: The ice that you and I typically find every day has the oxygens arranged in a hexagonal lattice, but many of the hydrogens are diso...
What happened to all of the sweepstakes?	[ "They were replaced by online contests through web forms and social media, which are faster, easier, and cheaper to both organize and participate in." ]	[ "They usually provide, in the very small print, a second way to enter, such as by mailing them a post card. Clearly they'd prefer you buy the product. :-)" ]
Where can I learn more about concepts of Druidism?	[ "/u/searocksandtrees compiled a list of druid questions a few year ago. Between the various threads you should get an idea of what we know. _URL_0_" ]	[ "Believe it or not, Microsoft have an excellent page on this: _URL_1_ Also, the \"dummies\" series have a good one, too: _URL_0_" ]
Efficiency of heaters	[ "in an energy sealed room they have the same efficiency (100%) because of conservation of energy. Any losses in the fan or heating element are converted to heat anyway. Maybe the oil heater would be slightly lower, because of some incomplete combustion." ]	[ "Here's a list of a few common ones. ([Link](_URL_0_)) The thing is, most of these animals are actually quite closely related in evolutionary time, so their proteins are similar and will break down at similar temperatures. That being said, birds are the warmest on that list, which makes sense because they're the mo...
Is there a maximum elevation possible for mountains before weathering would become too harsh to continue rising?	[ "The main limiting factor in mountain height is the weight of the mountain turning the rock at the bottom into liquid, as the_zorn_supremacy stated. When the weight of the mountain surpasses the structural strength of the material it is made of, it will collapse under its own weight until it reaches a more suitable...	[ "This won't be the most in-depth answer but it's kinda like this Plants and tree love sunlight. They use it in photosynthesis to create this neat stuff called glucose, which is pretty much sugar. Allows them to grow n stuff. So the higher they get the more likely they are to get sunlight, which causes this thing c...
What is it about the works of famous Abstract Impressionists like Mark Rothko and Jackson Pollock that make their work "good," as opposed to some random shit anyone else could draw?	[ "I actually just finished an essay about abstract expressionism! Something big to keep in mind is the political and social climate of the time, this was post World War Two, a time of communism, patriotism and paranoia, a time of America declaring and celebrating the freedom of its citizens. Pollock and Rothko were ...	[ "This is a deceptively deep question that has to do with spectroscopy selection rules. If you google \"Raman scattering selection rules\" and take a look at some of the results you'll learn a lot. In this case there's a complimentary distinction between IR spectra and Raman. In a very crude sense, because of the se...
In the USSR/СССР, was being bilingual considered an important skill?	[ "Just a note: Mongolia was never in the Soviet Union. That said, the foreign language of choice for every educated person in Mongolia was Russian." ]	[ "This question is getting a lot of traffic after being [tweeted by @reddit](_URL_5_), so I thought I'd welcome those of you that haven't visited /r/AskHistorians before to the subreddit. Please do bear in mind that in order to keep the quality of answers here high we have [strict rules on comments](/r/AskHistorians...
how cranes are transported onto building sites	[ "Some large cranes are [self-raising](_URL_0_) as you can see in this timelapse video." ]	[ "Hi, you may be interested in a couple of previous threads * [Modern cities bristle with parking lots used by commuters, businesses, and residents. Before the automobile, how did urban centres like London, Paris, and New York \"park\" their horses, carriages, and buggies when not in use?](_URL_0_) featuring /u/henr...
When a courier is delivering a big metal box which reads 'Time delay fitted which courier cannot override', what does that mean?	[ "The box has a timed lock on it. It cannot be opened until, say, a day after the courier was supposed to deliver it. So trying to rob the courier at gunpoint won't work; she literally cannot open the box to give you the stuff inside it." ]	[ "Both special relativity and general relativity affect clock rates. * Special relativity: Faster moving clocks run more slowly, so a low orbit (fast moving) clock runs more slowly than a high orbit (slow moving) clock or than a stationary clock on the Earth. * General relativity: Low altitude clocks run mor...
What is the physiological difference between (cannabis induced)munchies and "real" hunger?	[ "Well that's just appetite versus hunger. I'd say hunger is generally felt in the stomach as a pain, whereas appetite isn't painful, to just have a craving for something and it's on your tongue" ]	[ "I'm sorry that I'm no expert, but I remember reading about this the last time a similar question was asked: _URL_0_ Basically, you percieve time faster after your run because of endorphines released during the work out, which means that the music seems slower. This is apparently also why a lot of rock musicians pl...
Why are there 6 sides to nuts and some screws?	[ "You know how wrench heads are usually slightly angled? That is so when you don't have enough space to twist it, you can flip it and twist it a little bit more. That only works because the screw has six sides. If it had less, you'd have to turn more each time and might not have the space for it. If it had more, the...	[ "These images might help you see it better, [source of them is here.](_URL_1_) [The Nikon 6mm f/2.8 cross sectional diagram with lines showing the light coming in.](_URL_0_) Nikon even apparently patented a 5.4mm f/5.6 lens with an angle of view of 270 degrees, though it was never made, [here's the diagram for that...
Why isn't/hasn't something been done about the feminists who have interrupted the male issues lecture at the Canadian University during the past two years?	[ "Hey everyone, just a friendly reminder that replies directly to the OP must not be jokes and need to have some sort of explanation in them." ]	[ "Stewardesses would notify the captain and involve air marshalls. Guy would be detained. Plane would come in for landing pretty damn quick. Tourettes or not is determined in investigation. Not on the location." ]
How were US Space achievements (specifically the moon landing) portrayed in the Soviet Union?	[ "Another question: did the Soviets believe that they \"won\" the space race in general? Did the Soviets and the Americans have the same understanding of a \"space race\"?" ]	[ "This question is getting a lot of traffic after being [tweeted by @reddit](_URL_5_), so I thought I'd welcome those of you that haven't visited /r/AskHistorians before to the subreddit. Please do bear in mind that in order to keep the quality of answers here high we have [strict rules on comments](/r/AskHistorians...
Did old movies look just as crisp in theatres as they do in digital remasters?	[ "> What about in 1977? Would someone watching in a theatre have experienced all the detail that I enjoy now? Better. 1080p is lower resolution than film (inasmuch as film can be said to have a \"resolution\", when it really has a \"grain\", which is similar, but not quite the same). Movies that were shot on film ha...	[ "It is impossible to know exactly what the black and white colors were in real life, unless the colorists have information from other sources. Cool colors and warm colors translate to lighter or darker b/w shades, yes, but the exact color? No. You can make pretty good guesses - black lips were probably red, white s...
Why is the bell pepper so big, while it's mostly empty on the inside?	[ "The plants and animals that we use for food have nearly all been domesticated and bred to fit human needs and desires. They are much different than the wild ancestors which were much smaller and denser. _URL_0_" ]	[ "Our brain is constantly making connections between one idea and another and navigating how they are related. When you are a child you must \"imagine\" answers to fill in the gaps which you haven't discovered. As you age you fill in more of those blank spaces with real tangible experiences and when you think of som...
How do Japanese people know how to say each other's names if each kanji has multiple meanings and pronunciations?	[ "Are the more opportunities for error? Yeah. But it still works largely the same way. If you have nothing else to go on, you fuck it up and get corrected. It's also decently common, at least in a school setting, to write your name on the chalkboard when introducing yourself. Before that, unless they are a brand new...	[ "When we use the term \"information\" in this context, we really mean something rather mundane. The idea is this: In quantum mechanics, two distinct quantum states cannot evolve into the same state. Classical calculations indicate that any two black holes of the same charge, mass, and angular momentum are indisting...
Why does every interval on a number line contain infinitely many irrational numbers?	[ "Imagine you take the space between 1 and 2. Now you want a number that’s just slightly smaller than 2, say it’s 1.9 now let’s say that you want a number that’s in between those say it’s 1.95 this can keep going on forever as no matter how small the difference is you can continue to create a number that is slightly...	[ "In the case of the inuit, there was a division of the year recognized on the basis of the passage of seasons. The year was cut up in 13 months based on the appearance of the new moon. But there was no cutting up of the day in hours, as such a unit was impractical and made little empiric sense in an environment whe...
What would be the international response if its found the Rebels are using chemical weapons and not the government	[ "Well, people will probably stop arming the rebels. There might even be NATO sirstrikes on rebel extremists to keep them from gaining acess to the weapons. A big part of the decisions that will be made is how the rebels organize to keep these weapons secure, who they give acess to, and what they use the weapons fo...	[ "Hi there -- while we've approved this question, we would like to remind potential respondents of our [current events](_URL_0_) (AKA \"20-year\") rule -- it's fine to discuss events through 1997 (inclusive) and their effects, but not events after 1997. Thanks!" ]
What the Red Ring of Death Actually Does To Your Xbox 360.	[ "The red ring doesn't do anything, per se. It is an indication that some sort of catastrophic failure of the system has occurred. Many things can cause this, but essentially it boils down to, \"if you see the red ring, you're screwed.\" You would have to repair your system, or get it professionally repaired." ]	[ "Penn & Teller: Bullshit! did a show on this, its very worth a watch, they break it down quite well and understandable. [Link to the full episode](_URL_0_) on youtube. Warning, NSFW language and boobies in like the first 2 seconds, because its Penn & Teller and thats what they do" ]
How did early humans (and other primates) get their necessary salt intake?	[ "Part of the reason why salty food tastes so good is so that we can easily identify things with high salt content and seek them out." ]	[ "Your question presupposes that the behavior of pinching cheeks is an evolved behavior. Have you considered it might be a culturally learned behavior?" ]
In quantum field theory, are the electric and magnetic fields considered to be two separate fields that interact, or two aspects of a single field?	[ "They're unified into a single field, represented by the electromagnetic field tensor, which can be expressed in terms of a single four-potential that incorporates both the classical electromagnetic scalar potential and the classical magnetic vector potential into a single geometric object. This is true in both cla...	[ "According to general relativity, gravity is a deformation of space-time. Space-time is not flat and therefore objects do not follow naturally straight trajectories in space-time. This is why we perceive gravity as \"force\", which does not exist in reality. We interpret the curved space-time around us as gene...
why regulator water looks carbonated after it's been sitting (in a glass) for a while.	[ "Water out of the tap has gases dissolved in it. Not, you know, a lot, but some. As it sits in the glass, imperfections in the inner surface provide sites for bubbles to form as the gas tries to leave the water. It's a much slower, tidier presentation of the same effect that creates the Diet Coke and Mentos trick."...	[ "Negative air pressure. Warmer air takes up more volume than cooler air. When food is hot, and you seal it in an airtight container, the remaining air in the airtight container is warmed by the hot food. As the food cools -- even a little -- the air temperature also cools. As the air temperature decreases, the co...
How the partitions of a hard drive are identified as stand alone hard drives by the OS?	[ "They're not. They're identified as partitions. You can format these partitions with a filesystem which the OS can see. Now, how the OS deals with these filesystems is different from OS to OS. Windows (usually) assigns them drive letters. UNIX-Like operating systems use mountpoints along the root filesystem. MacO...	[ "One: known patterns of spread and parameters of the patient. For instance, a woman in her earlier thirties with tumors in breast, ribs, and brain is most likely to have breast primary with bone and brain metastases. Two: pathology. Take a biopsy, or a tumor excision, and look at it under a microscope. Some tumors ...
Why is micro (μ) the only prefix which doesn't use a letter from the latin alphabet?	[ "We already use mega (M) and mili (m). micro also starts with m, the easiest way to keep the m but avoid confusion is to go to a greek letter. If you do not have access to greek letters you can also abbreviate it as u e.g. us or um for microsecond and micrometer, respectively." ]	[ "Miller and urey did an experiment some 50 years ago. They took basic chemicals and put it in a special flask that simulated prehistoric conditions such as lightning and volcanic acitivty. Macromolecules like DNA, RNA, and fats formed. Probably one of the coolest experiments ever in my opinio" ]
Why do some hairs stop growing at a specific length, while other hairs could keep on growing forever?	[ "None of your hairs grow forever. They grow for x amount of time. Then they transition to dormancy for y amount of time. Then they are shed, and a new hair starts growing in its place. The x and the y aren't necessarily the same all over your body. For instance, hair on your head can grow for several years before b...	[ "It is down to the combination of the genes you get half the genes from your mother and half from your father but those genes are an almost random selection of those genes which go to make up each so can be combined in trillions of different ways. Like saying you get half a pack of cards from one parent and half fr...
Why don't batteries charge instantly?	[ "\"if there is an infinite amount of potential electricity flow from an outlet\" There is not an infinite amount of potential electricity flow. The amount of electricity flowing through a wire is limited by the wire. If you put too much electricity through a tiny wire, it can heat up and melt." ]	[ "Just imagine the electrons in a cable as little balls pushing each other trough a pipe. That means the pipe is always full and If you flick the lightswitch it just needs the distance of one electron to be moved to start the lightbulb" ]
Why was AIDS most virulent in the gay community around the time of its discovery? (Possibility NSFW?)	[ "* anal sex is a particularly good way of transmitting STDs * since pregnancy was off the table, many gay men didn't care about using protection * at the time, many gay men were in closet, and were hesitant to get tested * women can contract AIDS, but have a hard time transmitting it, so it did not spread as quickl...	[ "Hi All, I've been looking into it further, and wrote a blog post about it: _URL_0_ TL;DR Israel and the Arab World were competing for influence in Sub-Saharan Africa. C.A.R. and Israel formed a good friendship on the grounds of diamonds for military assistance that unofficially lasts to this day." ]
In what form would information about matter escape a black hole (or not, I'm quite lost actually) ?	[ "When we use the term \"information\" in this context, we really mean something rather mundane. The idea is this: In quantum mechanics, two distinct quantum states cannot evolve into the same state. Classical calculations indicate that any two black holes of the same charge, mass, and angular momentum are indisting...	[ "Well it's a mixture of things. Some of it is kind of like an inertia, expanding from the big bang still. But the rules that govern the size and shape of the universe allow for it to continue to expand, depending on the relative amounts of mass and energy in the universe. From what we're seeing, there's more energy...
How do white blood cells store information about organisms they need to attack?	[ "Our immune cells (T and B cells) form 'Memory cells', once they encounter an infection or antibody. - After a naive T or B cell encounters an antigen/infection it becomes activated and begins to proliferate (divide) into many clones or daughter cells. - Some of the daughter cell clones will fight the infection. ...	[ "They are kept in the device's RAM as you use the app, so that when you scroll back up, they are instantly available. Some apps may run out of RAM or otherwise optimize to save it, so the data will be erased from the RAM and lost, thus when you scroll back up, then it must re-load the data from the internet." ]
Why do teachers teach kids the X sound with the word Xylophone when that's not even the sound X makes?	[ "X does make that sound in the word Xylophone. Also: Xavier Xander Xenophobia Xanthum Xanadu *Xenon thanks /u/bovfem" ]	[ "So all languages evolve over time. This is a basic fact of language change. Words, expressions, grammar, and especially pronunciation all drift over time. [This is explained nicely in this Merriam Webster video](_URL_0_). The way we write English is based on how it was spoken centuries ago, and without an organiza...
How can we hear simultaneous sounds in both ears, but discern what they are and whereabouts they're coming from?	[ "What seems to be simultaneous sound is actually far more complex, but your mind helps you to perceive that complexity as \"one sound\" that makes sense. Your ears are positioned on opposite sides of your head. This leads to: * Sound getting to one ear slightly faster that the other ear * Sound getting dampened as ...	[ "You get a super position of waves. The waves would add up. Where the 2 peaks align, you would get a wave twice as high (assuming equal waves), where a peak meets a trough, you would get no wave. As they parted, you the waves would look unchanged. This can lead to some freak waves, where a large number of tiny wave...
So the moon is pulling on the earth slowing its rate of rotation, does the earth have a similar effect on the moon?	[ "Yes, tidal effects have actually forced the Moon in to a tidal locked state. That is, the same side of the Moon is always pointing towards the Earth. Eventually, assuming the Earth is still around by then, the Moon will have a similar effect on the Earth and the same side of the Earth will always point at the Moon...	[ "Point a flashlight at the wall and turn it on. See the small circle? Now, let's say your flashlight is delivering xyz power to the wall. So xyz power is landing in that circle, right? Tilt the flashlight in any direction. The circle spreads out across the wall doesn't it? But you didn't change the batteries or any...
Would taking 2 hour naps throughout the day help as much as sleeping 8 hours at once ?	[ "If you are thinking about Polyphasic Sleeping, then it depends. Sleeping multiple times a day for a couple hours at a time will technically leave you with more time to do things throughout the day. However, you won't end up with the same rest as those who sleep throughout the night. So it depends on what you mean...	[ "Nobody knows for sure, is the short answer. The slightly longer but still short answer is that the best guess anyone has is that it's a temporary \"short circuit,\" of a sort, involving your long-term and short-term memory. Your knowledge of things that happened to you two seconds ago comes out of your short-ter...
Why is 4:4 time the "standard" time in western music?	[ "I'm assuming you're referring to pop music in Europe and North America and not classical music as it developed in the western world. I'd imagine part of it comes from rock and pop having its roots in blues which uses 4:4 time. In addition, gospel and southern spirituals and folk music which were also influences pr...	[ "For a cover song, the cover artist just has to pay [mechanical royalties](_URL_0_). These are royalties to the songwriter, and are statutory -- which means that the rate is set by law, and is not something that's negotiated. Right now, it's about nine cents per song sold. And it's important to note that the origin...
What is a hacker really doing?	[ "> I've always wanted to know why hackers are jamming on their keyboards In reality, this doesn't happen. This is done in movies to make it look dramatic and exciting. Real computer hacking involves staring at a computer screen for hours of a time, searching a lot on Google, muttering \"hmmm\" and various expletive...	[ "Because our bodies are electrochemical pathways that can be 'hacked'. The proper dose of chemical here, and suddenly you're having an epileptic seizure. A splash of a different chemical there, and you have the sudden feeling that something's biting your feet, so you climb a tree to escape it. Another chemical, and...
Why are video games released earlier in North America than in Europe?	[ "The US alone is a larger market than any singular country in Europe by itself so releasing there immediately gets your game into a large market. Also a lot of games are made in the US and would make sense to release here first. And just the US tends to release games on Tuesday while Europe tends to release them on...	[ "1. The East was settled first, most people chose to \"stay\" there. 2. West of that \"split\" is much less hospitable (geographically speaking). Lots of high plains, deserts, mountains, canyons, etc. The weather here can be very extreme. Compare this to the flatter, greener, less tornado-prone eastern half of the ...
Given the physical properties of chewed chewing gum, what kind of material is it?	[ "I'm sure its flow behavior is non-newtonian, but in addition to that it's ... well, rubbery. I'd call it a viscoelastic material. These are materials that can both flow and bounce back." ]	[ "I actually applied for a job doing this exact thing a couple years ago. What they did, was to have the contractor send the reasearch facility a small sample of the wall, which was prepared and studied under a [Scanning electron microscope](_URL_0_). Known as a SEM, these types of microscopes bombards your sample w...
Pavlov's Dog experiment	[ "KNOW THIS ABOUT PAVLOV I seem to see him getting the \"his experiment was pretty easy, not a huge deal, he was just the first to make the connection\". Understand that he was studying the internal organs of live animals to examine processes like digestion. He was doing some complicated stuff before he saw that t...	[ "In Vietnam the Viet Cong would make booby traps and on them they would rub various poisons and feces on the damaging parts of the trap. Example is a Punji Stick: _URL_0_ Here is another sourced article on the topic for your read: _URL_1_" ]
How hard would it be to engineer a machine that runs off of carbon dioxide and has oxygen as it's output? A synthetic photosynthesis of sorts?	[ "Not hard but it would use more energy than it produced, and the generation of that energy would probably have to run off oxygen and produce carbon dioxide. Losses in the system would give you a net loss of oxygen and a net gain of CO2." ]	[ "Extrasolar planets are small and dim and really far away and their light is swamped by the light from their nearby stars. Existing telescopes for the most part don't even have the ability to distinguish the light from a planet direcdtly as a dot, much less map the planet. There is a proposal to devise a system to ...
How does adding one proton to an atom completely change its behavior?	[ "The behavior that you're looking at is chemistry. Chemistry is almost entirely governed by how the electrons of one atom interact with the electrons of another atom. There are certain arrangements of electrons that are very stable, while other arrangements are unstable—it takes a lot of energy to get to that state...	[ "basically you gain extra speed without using valuable fuel. simple example train is coming towards you at 80km/h. you throw a ball at train with 10km/h. from train point of view ball approaches it at 90km/h, then it bounced back at 90km/h, from your point of view ball bounces back at 170 km/h." ]
Why aren't stealth bombers painted in sky blue?	[ "I was in Air Force ROTC a year ago. Most of their missions are flown at night. That's literally it." ]	[ "The same way that astronomers find out almost everything. They use [spectrography](_URL_0_). Absorbtion colors - the specific colors of light that get emitted when light is absorbed by matter - tell you exactly what element or molecule did the absorbtion and emission. This process works with suns, atmospheres, pla...
How does heat play a role in brewing coffee? Does coffee need to be heat activated to release caffeine?	[ "Heat will definitely increase the total solubility of caffeine (and everything else) into the water and also the rate at which it dissolves. You can [cold brew](_URL_0_) coffee or tea, but generally it takes many hours to get normal strength brew compared to a couple minutes for a hot method. Changing the temperat...	[ "Talking about what is happening \"right now\" inside a black hole makes no sense. Time stops, as far as we're concerned, at event horizon, nothing ever passes that point. If you were to go through the event horizon, it would be a different story. Energy won't come from nothing. Black hole increases in size as it e...
From where did Indo European come?	[ "Any chance you'd be willing to hold on to this question until the historical linguistics AMA panel goes up on the 24th? It's not a bad one." ]	[ "I just read the article, and Witzel isn't even telling a just-so story -- he's telling an \"it's so whether it's so or not\" story. Take a look at this statement, as just one example among many: > Apart from the feature of drift, certain motifs that widely appear in Laurasian and non-Laurasian mythologies may bel...
Why is it that putting stress on muscles makes them stronger, but putting stress on your eyes just fucks them up?	[ "I seem to recall that, for your eyes, a workday reading a screen is like making a fist. 30,000 times. The reason may simply be the scale of the strain. 12 repetitions of some exercise is a lot, but thousands of cycles (in a matter of minutes) is off the charts." ]	[ "Looking at an object in a mirror is the same as looking at the object at a distance of (distance from you to mirror) + (distance from object to mirror). To see something, light travels off of an object, through the pupil and to the retina. The pupil focuses this light so that lands correctly on the retina. Blurry ...
Why do anime episodes often get removed from YouTube for copyright but never get removed on sites like Crunchyroll?	[ "CrunchyRoll pays the studios for the anime and either you pay a fee or have to watch commercials (or not if you use adblock)" ]	[ "When a band makes a song they normally need a group of people to tell other people about the song and handle the money the song makes. These people are the record labels. The record labels will have a deal with the people at Apple to put the songs they represent on iTunes. The record labels get the original high ...
What is meant when we say two species share a percentage of DNA?	[ "These kinds of statements are often confusing because there are a number of ways to measure these things, and you usually see these statements in popular press articles that don't clarify where the numbers come from. The numbers can change depending on whether synonymous substitutions are counted as differences, h...	[ "Xenotransfusion has been attempted in the 1600s, with mixed results, with sheep blood. Ape and chimp blood might work, as would pig blood as they all have similar Rh factors. Source: _URL_0_ Also, dog to cat transfusions can be done, bit only once as the cat will make antibodies to the blood. Also, apes, dogs, ca...
Why did Adolf Hitler wear a mustache made world-famous by comedian Charlie Chaplin?	[ "That style was actually called the \"toothbrush moustache\" and it actually originated in America during the late 19th or early 20th century, I think. It was sported mostly by the working-class, as it didn't require a lot of maintenance unlike the flamboyant moustaches and beards worn by the wealthy. Chaplin used ...	[ "Some people are responding with saying it's just Shakespeare. Can I just say as a Shakespeare specialist, this is not an acceptable answer? Shakespeare did not invent these things (and it is an open question how much of our modern Macbeth was written by Shakespeare any ways *EDIT: please note /u/texpeare dis...
What is the relief we feel after sneezing?	[ "Sneezing is good for you. Anything that is good for you is rewarded with a good sensation so you don't try to prevent it." ]	[ "Good question!! I do it a lot and have no idea why. I suppose it's a kind of primitive thing. Animals do the same. They nip at us and" ]
On legal ramifications for people who join paramilitaries like the Foreign Legion.	[ "I can't speak to your overall question but I can tell you that the French Foreign Legion is a component of the regular French Army and most certainly is not a paramilitary organization." ]	[ "Why are things illegal? Because the law says they're illegal. In the US, [the law that makes online gambling illegal](_URL_0_) specifically makes an exception for fantasy sports leagues. That's all there is to it. It's not a complex loophole, the law just says \"you can do this one thing\"." ]
What happens to muscle when you don't work out for a long period of six months or more?	[ "Muscle never, ever, ever turns directly into fat under any circumstance. Muscle fibers demand. Lot of calories to keep up (take a look at The Rock's diet sometime), and working out basically proves that that level of muscle is required. It \"justifies\" the caloric expense, so to speak. When you stop working out ...	[ "When you shoot an arrow from a bow, the energy of the bow is transferred to the arrow. It gradually (doesn't seem like it, I know) pushes the arrow downrange, from a full stop at full draw, to full speed when the arrow leaves it. All that pent up energy of the bow at full draw is efficiently transferred to the arr...
When I eat late at night I wake up incredibly hungry?	[ "As an alternate question to this. For me when I wake up (at about 7:30) I do not want to eat anything, so I general don't eat until 11 or 12. Why? I'm fairly sure i am not the only person who feels like this every morning? Edit: Sorry for hijacking this thread" ]	[ "When you work out you actually tear your muscles. Once you are resting your body repairs them, and this is how you actually gain muscle mass. So naturally it needs nutrients and food to break down and convert into that new tissue. However when you just overeat without working out your body doesn't have any repair...
What is the reason we just don't have rover on all of the planets, besides money?	[ "Besides money there is the problem of having a rover than can survive the more extreme conditions on other planets. The Moon and Mars are pretty tame compared to Venus, Mercury or Jupiter. The distances, as well as the environmental conditions, make control and communications a much bigger problem. Look at the rec...	[ "They use [reaction wheels](_URL_0_) in most cases, which run continuously and only need some electrical power to run. The main drawback is that they wear over time and eventually fail, so engineers often put spares if missions are expected to last for long time." ]
Why is MGM Resorts suing the victims of the Las Vegas massacre?	[ "It very much seems like a terrible PR decision. Legally speaking, they're looking for a declaratory judgment, which would be a way to get a court to state that they're not liable, without having to wait to be sued. That's not too uncommon in complex liability cases where there are a lot of parties who might have s...	[ "They don't. It's a marketing ~~lie~~ gimmick. I used to work for a company that did a similar thing by mail. New customers were supposed to sign up by a certain time for special rates but as a specific matter of policy we'd give those rates to anyone who mailed back the special offer." ]
Is photonic energy being lost due to space expansion? If so, then what are the causes?	[ "Yes. The cause is, as you say, redshift. Energy is not globally conserved in general relativity, only locally." ]	[ "No, more energy is required to create the compounds than is stored in the compounds, because the production of them also required the metabolic maintenance of the plant which was constructing them. Imagine the fat cells in your own body - an adequate analogy despite the vastly different purposes. A pound of fat ha...
why does scratching an allergic reaction to a bug bite make it grow?	[ "So when you get bitten by a bug, it injects a small amount of venom under your skin. When you scratch it, you take the “bubble” of venom and push it out from the center, causing it to spread and grow." ]	[ "Talking completely out of my ass here, maybe it has to do with some instinctive grooming drive that we inherited from our ancestors. If you go to the zoo or watch a documentary, you can see that apes/etc. instinctively groom each other; so some people probably get a sense of pleasure from seeing such things becaus...
How was the International Space Station put into space?	[ "It was launched in pieces as shuttle payloads and assembled in space over several years." ]	[ "Not sure if it's the same link ecakir meant, but this is awesome: _URL_0_ It has the live camera feed, as well as a chart of exactly what each person is doing at that time. For example, at this moment: * Kotov is on Routine Activities - Exercise * Hopkins is on Routine Activities - Lunch (Experiments next) * Mast...
When will we know for sure if we have caused global warming or if it is a cycle that we are powerless to stop?	[ "We already know that global warming is happening. There is a great talk on the topic given by Richard Alley which I will link you to. The talk is about using ice cores and other methods to show that CO2 is the main driver of Earths climate. From then on you can try and predict the warming that will happen due to t...	[ "Point a flashlight at the wall and turn it on. See the small circle? Now, let's say your flashlight is delivering xyz power to the wall. So xyz power is landing in that circle, right? Tilt the flashlight in any direction. The circle spreads out across the wall doesn't it? But you didn't change the batteries or any...
If every oxygen atom weighed a proton more, how would it affect respiration?	[ "When you say \"weighed a proton more\", do you mean that it just has extra mass without any extra particles, or that it actually has another proton?" ]	[ "_URL_1_ _URL_0_ The egg shells are porous (lots of tiny holes, holes so small that we can't see them without magnification). These pores allow air (CO2 and O2) to move in and out of the egg. Close to the shell are membranes with lots of tiny blood vessels that allow these gases to diffuse across the membranes, and...
How do chicken eggs get so big if females are born with all the eggs they'll ever have?	[ "Chickens are the same way, but what people refer to as a chicken egg is not the same thing as what is meant by a human egg. The equivalent in chicken (the gamete) is a microscopic cell, just like in a human. The rest of the chicken egg is then created when the egg is meant to be laid, and the gamete ends up sittin...	[ "Shells (ignoring, for a moment, those animals that inhabit the shells of others, like the hermit crab) are similar to bones, and grow in basically the same way that bones grow." ]
If I'm thinking of a song, are my brainwaves moving at the frequency of the notes?	[ "The thing about brains is that there's always a lot of stuff happening all over, such that it's hard to tell what's going on at any given point. Getting useful data from them usually requires a lot of averaging; the colorful brain scans you often see really only represent slightly increased or decreased activation...	[ "Not a neurologist here, but I had read certain articles way back that explain our learning process. It was sort of like: we learn a certain thing while we are conscious, but this certain thing we learned is only stored as short term memory while we are conscious. The brain processes this information during sleep t...
Everything about this seems wrong, but according to By Roger K. Broxton of Andalusia, president of the Confederate Heritage Fund, the Civil War was not over slavery, but taxes and self defense (full test in post) I have an associate whose actually using this as a source.	[ "[The Civil War was about slavery.](_URL_0_) This doesn't mean that there were not other grievances that the various states had with one another, but slavery is the primary cause for the South to secede. As a general note, Southern/proslavery apologia coming from \"Roger K. Broxton of Andalusia, president of the C...	[ "Your employer takes money out of your paycheck throughout the year to pay your local, state, and federal taxes. The amount they take out, however, is just an estimate how much tax you will probably owe at the end of the year. There's no way for the state, local, and federal governments to know what you actually do...
German language in the midwest	[ "A good way to track the popularity of languages in an area is seeing how many newspapers were published in that language. Newspapers are more regional than books, and require more of a core language readership to keep going, so if there's a German newspaper around in an area, there's German readers around. My libr...	[ "The author is probably talking about the Jüdisches Zentralmuseum which I have written about [here](_URL_0_)." ]
What actually happens when people die "in their sleep"?	[ "It is hard to tell because no one lives to tell the tale. On a more serious not, most people who die in their sleep probably die from a heart attack or a serious change in heart rythm. Heart attacks tend to hurt and i wouldn't be surprised if they wake up. A sudden change of heart rhythm makes the circulation sto...	[ "It becomes a debt to that person's estate (which is cleared up during probate). If that person had no assets/money and the person wasn't married, the debt would be written off." ]
If everyone owning shares in every corporation listed on NYSE were to cash in, will there will enough $ in cash to pay them all? If not, does that mean my shares are worth nothing?	[ "Shares are worth what people are willing to pay for them. The stock market is supply and demand incarnate. If everyone starts selling then the surplus of stock would cause the price to drop dramatically." ]	[ "Imagine that you have a number of (bees/participants/sources), each of which has 1% accurate, useful information and 99% random noise. Individually, the noise drowns out the information. However, if you add together all of your (bees/participants/sources) in the right way, the information accumulates while the noi...
Why can't anything travel faster than the speed of light? I'm told this all the time, but I've never received a good explanation.	[ "[Why exactly nothing can nothing go faster than the speed of light](_URL_0_)" ]	[ "This really isn't an ELI5 topic/question. It seems that you don't have a general answer to your question yet, and ELI5 is here to break down a general answer into understandable terms. /r/askscience should be a bigger help." ]
How does Audiosurf work?	[ "I'm not familiar with how in particular they handle it, but I know a bit about audio. It seems that the placement of blocks is determined by the dynamics of the piece (The changes in volume). As many people are quick to point out, modern music typically has very little dynamic range overall, so they could also an...	[ "Usually through in game purchases. If you wanna play for free you can, if you wanna use a fancy gun or wear a tie dye speedo, you have to pay for that." ]
How does a natural lake not drain completely into the ground it is above?	[ "Because the water is under the ground under the lake bed as well, thats basically what it was doing until it became fully saturated and started to collect a pool" ]	[ "The article didn't make sense to me either, but I know you can get variations in gravity due to denseness. For instance they can detect the change in gravity when orbiting the moon when they pass over much deser materials in craters, and they can use it to map the earth because mountains have more gravitational pu...
what does net worth exactly mean? If someone had a million dollar net worth does it mean they are worth a million dollars or have a million dollars?	[ "Its the value of everything you own minus your debt. So if someone sells everything he has (assets), house(s), cars, jewelry etc etc, and cashes in all his accounts and stocks, repays all his debts (minus liabilities)and still has a million left he has a net worth of a million." ]	[ "At the time of the film's release (1989) there was a popular television advertising campaign for a new brand of appealing and affordable watches called ESQ (pronounced: \"Esquire\"). The commercial showed average people introducing themselves as \"Joe Somebody, Esquire.\" Their name would be written on the screen ...
Which kills us : Volts or Amps ?	[ "Amps. Volts are just potential. Like standing under a giant rock suspended in air has a lot of potential but it’s the current aka movement of the rock that kills you." ]	[ "It's easy to power the cigarette lighter, because that issues 12 VDC, same as the car's battery. To add a 120V 60Hz AC outlet would require an inverter, which would add cost and weight to the vehicle. Also, because it's just an outlet, people would expect to be able to plug a lot of weird appliances into it and ha...
Why does the United States care so much about Israel?	[ "At its core, the United States ultimately functions as a Christian nation. As a result, the government, whether for its own interest or the interest of the public, or both, supports Israel because of the religious affiliation. Israel might be a predominantly Jewish country, but Christians support it because of the...	[ "Greetings everyone. In the few minutes this sub has been up, it's attracting sub-standard responses. Just a reminder of a few of the rules: * no responses covering events/conditions post-1994, per this sub's \"20-year rule\" prohibiting discussion of current events * no anecdotes * no speculation OP: your question...
Can you determine someone's first language by how they speak other languages?	[ "It really depends on when they learn the language. There is definitely a \"peak language learning age.\" Grammar is more easily fixed than pronunciation." ]	[ "My uncle tried to do that in the 60's by giving a new name, so he was allowed to stay in the country for 7 years. Then he got in trouble and they recognized where he was from because of the investigator they brought in who identified him by his accent. If you are from a country with a lot of immigrants though they...
Why are traits like albinism and heterochromia more common in animals than in humans?	[ "i would also venture its because of the number of animals who are born and die each year is pretty high, compared to humans. i mean average human life span world wide is likely 65 or so and much higher in highly developed countries, where most animals have life spans like 20% that long or less. so thee odd are the...	[ "Straight hair that lies flat tends to hold in heat. That's an advantage in cold climates. Curly hair allows heat to escape while still providing protection from the sun to the skin underneath. That's an advantage in hot climates. Melanin in skin (the part that makes it dark) tends to block what's needed to make vi...
In medieval times did sword fights last as long as the movies, or was it over within a few seconds?	[ "To clarify, are you referring to one-on-one duels (e.g. tournaments) or on a battlefield?" ]	[ "> Can't they use the same high frame rate that people doing high speed motion capture use? No. Those special cameras require special high intensity lights that would blind any athlete on the field. Also, they can only record like 1 second of footage, so you can't have them going the entire time. I think the slow m...
Why is it so hard for law enforcement to locate and bust scam call centers?	[ "So many of them are overseas using VOiP to make the call over the internet. If someone is in South Africa at a call center and calls Chicago, the call travel over the internet to say Arizona, where they are picked up by a local exchange and then sent on the plain ol telephone system to Chicago. Now Chicago police ...	[ "The people don't make money off the adds themselves. They make money when say your typical 70 year old grandma or 5 year old kid click on the ad and download (and install) the program. Once installed these programs take all kinds of personal information (including credit card numbers) and can actually take control...
What keeps successive Congresses from overturning previous laws and potentially creating policy uncertainty?	[ "Nothing, that's how it's supposed to work. You can make your law a Constitutional Amendment, to make it harder to overturn. This was done with the Prohibition of alcohol. That turned out to be super stupid, so that's not going to happen again." ]	[ "A couple reasons. In the United States, the burden of proof is on the prosecutor to show that the defendant committed the crime. This \"presumption of innocence\" makes preparing a case hard work, because to win, the prosecutor has to convince 12 regular people that, with absolutely no doubt, the defendant commit...
Why can't we hold our breath to death?	[ "It is. You are correct. Deprived of oxygen to the brain a person will lose consciousness. Without the forced stoppage of breathing the autonomic system takes over (breathing is default, rather than not breathing, you don't have to decide to breathe it just happens) and the person will not die." ]	[ "Find a kitchen sponge. Soak it with water. Now try drying it out with a syringe. If you spent enough hours to succeed, the sponge would fall apart from the huge number of holes you've made. And lungs are much bigger than kitchen sponges and the air cavities are smaller. And there are ribs and things in the way too...
What exactly is going on in Mexico right now in terms of the missing/murdered students? And why were they killed? What for?	[ "The students were on their way to protest some politician that was trying to get elected. He told some corrupt police that were under his influence to arrest the students. After arresting them, the students were turned over to a drug gang and the drug gang was told that they were from a rilval drug gang - the drug...	[ "The supreme court had previously held that making private copies available for use by others was legal in Canada (see BMG vs. John Doe). As such, there was no legal copyright infringement that copyright holders could use as leverage to get (the subpoenas required to get) ISPs to disclose the identities of the file...
If property and home values are so much higher in the city than suburbs why do the city schools have worse budget problems?	[ "Property taxes based on home values sometimes doesn't make as much sense as you'd think. So say that .10 per every hundred dollars of property value goes to public school. In a $300,000 suburban home about $300 goes to the school. In an urban apartment building it may be worth $6 million, 20 times what that hous...	[ "Can you clarify your question? I see a map of a county in AZ detailed with geographic representations, and another map of the town boundaries in MA. You should look at similar maps to compare the 2 [MA](_URL_1_) and [AZ](_URL_3_) If you're asking about the make up of the political boundaries (i.e. Why does AZ not ...
Trying to understand Standard Deviation in other perspectives.	[ "No, the average is specifically 14.38 in that example, there is no give or take. The standard deviation would give you an idea of how closely grouped the numbers were. Two 40-year-olds have the same average age as a 5-year old and a 75-year old. But the 2nd group has a much higher standard deviation (35) than the ...	[ "Investopedia has a good example that makes it pretty clear: \"(the adjustment needed for the exchange rate) so that an identical good in two different countries has the same price when expressed in the same currency. For example, a chocolate bar that sells for C$1.50 in a Canadian city should cost US$1.00...
Why do some smaller foods have larger calorie count that some bigger foods? and how do they actually count calories in food?	[ "Because the density of energy in the substance is different. This is like why the energy in a tank of gasoline is far greater than the energy in an equivalent sized piece of granite. A \"calorie\" is the measure of energy contained in a substance. A calorie is a measurement that an amount of food can heat water (...	[ "Online tracking is easy. Whenever you click on an ad, it sets a cookie on your computer that marks you as arriving to that site from the ad. Your each activity on that site is tracked and noted when you make your purchase. Offline is a bit different. Depending on the size and marketing efforts of a company, they m...
What happened to the World Fair? What was it and why did it stop?	[ "> Why did it stop? It hasn’t. The Bureau International des Expositions convenes world fairs (now more commonly “Expos”) every few years, along with “specialized expos” in particular topics. The last World Expo was held in Milan in 2015. The next one will be Dubai 2020." ]	[ "Costs money to build and maintain the facilities, some countries don't feel like taking on the burden of that cost." ]
How could our brain remember such a tragic memory from something bad that happened to them during their entire life growing up?	[ "It remembers them the same way it remembers anything else. As for why it remembers them and so vividly - tragic events tend to spark off your survival instinct and your brain wants to work out how you could avoid being killed the same way yourself. That's partly why people get things like PTSD or replay nasty e...	[ "Tattoos are ink trapped between 2 skin layers where no repairs around it move it much. Scars and bone fractures replace broken parts with different harder structures that are persistent and replaceable by the same. The \"Ship of Theseus\" paradox of defining, if a completely repaired ship with 100% exchanged parts...
You are thirsty. Your body needs water. How long does it take for the water you drink to "rehydrate" you?	[ "I'm not sure, but I figure if I put a slightly accurate answer in here, someone else will explain why I'm wrong in great detail and you'll get your answer that way. You're welcome in advance. I always notice that if I'm really thirsty, I'll feel a bit tired as well. If I drink water, I feel more awake in about 15 ...	[ "> It sometimes seems to me that the runny noses, headaches and fevers we get when we have a cold or something are completely arbitrary. Nope. Runny nose helps to flush out the germs. Headache is part of the inflammation response to infection. > What does the body hope to accomplish by turning up the heat Most ba...
How had minecraft become so popular when the graphics are so cheap looking?	[ "Believe it or not some people care more about if a game is enjoyable than if it looks good. I know I spend most of my gaming time playing games like Minecraft, Elder Scrolls 3-5 and old pokemon games, all of which may not look the greatest but damn are they fun. Video games should be about having a good time, that...	[ "My guess? When you're dealing with a lot of makeup, prosthesis, special effects its easier to hide flaws. You can see acne under makeup in high def, you couldn't really see that back in the day. Just a guess." ]
Who Develops coding Languages? And how do they become Official?	[ "> Who develops coding languages? Anyone! Anyone who wants to can put in the effort to create a programming language. Today's popular languages have come from corporations, government, university, and individuals working on their own. > And how do they become official? Official is a relative term, as there is noth...	[ "Thank you for your submission! Unfortunately, your submission has been removed for the following reason(s): You can find the basic answer with a google / wiki search. Please start there and come back with a more specific question. If you disagree with this decision, please send a [message to the moderators.](_URL...
Can Lactic Acid be considered an alcohol?	[ "Good job for noticing! Lactatic acid is known as an Alpha Hydroxy Acid, AHA, an acid with a Hydroxy group on the carbon next to the carboxylic acid. So yes you can think of it as both an acid or alcohol, but it is better to think of how the groups affect one another and treat it as it's own \"functional group.\" F...	[ "Well that depends how the venoms work. Some may work by simply working opposite of the poison they're meant to counter, some may bind the venom, lessening its effect. Example, in atropine poisoning, one would use pilocarpine. Atropine is a paradympatholytic agent, pilocarpine is a parasympathomimetic. What that me...
Do all languages/cultures use sarcasm? Is it universal?	[ "Mightn't this question fit better in /r/Linguistics or /r/AskHistorians?" ]	[ "\"Just about everyone here\" Where is \"here\" for you? It sounds like your question's premise is based on a small sample set based on personal observation. Before your question is addressed, you should be making sure the premise is valid..." ]
Given the way the Indian subcontinent was once a very large island, is it possible to find the fossils of coastal animals in the Himalayas?	[ "Yes. In fact, [the summit of Mt. Everest is limestone](_URL_0_), a ~~mineral~~ rock formed in the seabed. [Ammonites](_URL_1_), fossilized sea critters, are found throughout the Himalayas. Edit: why does this post show 17 comments by I can only see 4?" ]	[ "The Book of Invasions might interest you. It's a collection of medieval writings which purports to give the history of the founding of Ireland; basically it's an Irish creation myth. Some of it is relevant to the creation myths of other parts of the British isles, for example the character Scota, an Egyptian p...
Why do computers get slow?	[ "As time goes on, you install things on your computer that require more and more resources. Heavier payload = slower speed." ]	[ "Imagine you're trying to find a coffee shop in a city. If you've been there recently, it should be pretty easy to find. If it's been 10 years since you've been to the coffee shop or the city, it might take you a LONG time to find. It also might take long to find if you've been to other, similar coffee shops in the...
Is a radio station's transmitter power approximately equivalent to how much power a light bulb would need to have to be visible everywhere in the radio station's listening area?	[ "No. The propagation frequencies of electromagnetic waves varies by frequency. Government allocate spectrum licenses with this in mind. Visible light propagates by line-of-sight only (a tautology, isn't it?), but radio waves can penetrate some materials and reflect off others. AM and shortwave broadcasts can span c...	[ "Potassium-40 doesn't undergo nuclear fission, only various forms of beta decay. In principle you could use a shitload of bananas as a radioisotope thermoelectric generator or a betavoltaic, but you'd need basically a mountain-sized pile of bananas to get something appreciable. Better to eat the banana and use the ...
If every state switched to nuclear power, how long would it take to reverse human attributed global warming?	[ "Well, just switching power sources wouldn’t reverse global warming. All of the CO2 is still there, and the levels are still going to increase, albeit at a much slower rate. However, with more power, we could make machines to suck carbon out of the air. Over many decades we could definitely see the numbers start to...	[ "Not enough energy to. It's like lighting a match in a snow storm and expecting it to melt everything. Sure, the match is hot, but theres a lot more cold than there is hot." ]
Why do towels get rough when dried outside on a line?	[ "Hard water deposits not being rubbed/softened by tumble dry action." ]	[ "Wifi and cellular systems use microwave radiation (like your microwave oven, except far far less power). Microwave radiation rips absorbed quite readily by polar molecules like water and fats. (this is how microwave ovens cook food, imparting the energy of microwave radiation into kinetic energy of water and fat m...
How long would it take to make a sword in Venice ca. 1650 for a talented blacksmith?	[ "It really spends on the quality of the metal and how intricate the designs happen to be. To make an uncomplicated short sword of that era, it would've taken around a week. Most of the information provided given the length of sword making is from the medieval/ renaissance ages respectively. I think the best answer ...	[ "A follow up question for when this is answered: if it is possible to make one, would it be possible to mass-produce? I’ve heard of Roman “fast food”, so the concept was there, but if someone went back in time with the knowledge to do so, would it be achievable to get a Roman McDonald’s chain up and running?" ]
If I was put in a quarantine bubble and the only germs/viruses in the bubble were in or on my body, could I get sick?	[ "Yes. If you get stressed and have had previous exposure to herpesviruses (HSV1, HSV2, VZV, etc) you can get flare-ups of those diseases. As you get older, your immune system declines in capability as well, so normal bacterial flora can cause problems. Even if your immune system doesn't lose competence, If you do...	[ "Because the elevator has sensors to make sure it is working right. When you jump it can confuse the sensors and cause the elevator to stop/get stuck because it thinks something is wrong. If you get stuck it can take a long time for a elevator tech to get there and reset the elevator and he can tell if it was becau...
Religion in Protodynastic Egypt?	[ "Sorry I can't give you the names of specific books or collections that might help, but I can give you the names of poems and stories (I'm grabbing these out of on of my readers for an Egyptian Mythology class, compiled by the professor). You are correct that many cities had their own patron gods and goddesses, and...	[ "I believe there have been some scientific evidence for chronic prostatitis but that's about it. Link to a review : _URL_0_" ]
About what size would the twilight zone of a tidally locked planet be?	[ "This could lead to a really interesting book, I. E. there's three societies living on a tidally locked planet, one on the hot side, one on the cold, and a third, human-like one, in the Twilight Zone!" ]	[ "This is in no way a thorough analysis of two continents and > 10,000 years of human habitation, just one of my favorite unique adaptations in New World agriculture. Before the rise of the Inka, the [Tiwanaku](_URL_0_) culture thrived on the hostile Peruvian and Bolivian altiplano from 300-1000 AD. The altiplano is...
Why is there always a bit of mist floating above my root beer when the bottle is first opened?	[ "Quick decompression causes things to cool down causing moisture to condense. It's a little cloud." ]	[ "It's all about having an atmosphere, since that's what helicopters need to fly. [This article explains it quite nicely ](_URL_0_) Here's a relevant quote: *\"Elysium was that—unlike an airplane cabin—its atmosphere wasn’t canned up in some hollow tube. A landing spacecraft could enter its air like it would on Eart...

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